Upload your PDFs, notes, and slides. Lucid's AI generates personalized practice questions and tracks what you need to review.
Full Pro access free through mid-January
🎉 Beta is full!
Paid subscriptions launch mid-January. Join the waitlist to get notified.
From upload to mastery in three simple steps
PDFs, lecture slides, scanned notes, images — Lucid reads and understands your study content automatically.
Our AI creates practice questions at multiple difficulty levels, targeting key concepts from your actual materials.
Answer questions, track your progress, and focus on your weak areas. Lucid adapts to what you need most.
New features added regularly based on student feedback
Questions adjust to your level. Struggling with a topic? Get more practice. Mastering it? Move on faster.
See exactly where you're strong and where you need work. Track mastery across topics and documents.
Science-backed scheduling resurfaces questions right when you're about to forget. Maximum retention, less time wasted.
Upload your textbook's index and get exact page numbers in explanations. Know exactly where to review.
Study on your phone, tablet, or computer. Your progress syncs automatically across all your devices.
Your study materials stay private. We never share your content or sell your data.
Full access to everything. No hidden limits.
Free through mid-January · Paid plans launch soon
Upload your first document and see AI-generated questions in minutes.
Join the Beta